What do we use to measure
weights nowadays?
• Grams. 1 gram is about
the weight of one
Skittle sweet.
Instead of writing grams
we often just write g.
• Kilograms. 1 kilogram
is about the weight of
a large dictionary.
We write kg for kilograms.
Can I convert grams to kilograms
and vice versa.
• To convert kilograms to grams, we multiply
by 1000.
• To convert grams to kilograms, we divide
by 1000.
To convert kilograms to grams,
multiply by 1000.
• Move all the digits three places to the left,
and add zeroes as placeholders.
TH
H
T
U
9
To convert kilograms to grams,
multiply by 1000.
• Move all the digits three places to the left,
and add zeroes as placeholders.
TH
H
T
U
1
7
To convert kilograms to grams,
multiply by 1000.
• Move all the digits three places to the left,
and add zeroes as placeholders.
Hth
Tth
Th
H
T
U
1
2
8
To convert grams to kilograms,
simply do it the other way.
• Move all the digits three places to the right
and see what you’re left with.
Hth
Tth
Th
H
T
U
6
0
0
0
1.5kg… Hang on! This one’s got a
decimal.
• Easy peasy. Do the same thing. Just don’t
move the decimal point!
Th
H
T
U
1
Tenths
5
Convert 4.3kg to grams.
• Easy peasy. Do the same thing. Just don’t
move the decimal point!
Th
H
T
U
4
Tenths
3
Convert 1900g to kilograms.
• Easy peasy. Do the same thing. Just don’t
move the decimal point!
Th
H
T
U
1
9
0
0
Tenths
0